Update msys2/setup-msys2 GitHub Action (spiffe#4421)

This project generates releases by just creating a new release branch
without a corresponding semver tag, and changing the major version tag
to point to the release branch, which isn't enough for dependabot to
automatically detect the new versions,
see msys2/setup-msys2#327

Manually update this step for now to the current commit pointed to by
the `v2` tag (`v2.20.0`): https://github.com/msys2/setup-msys2/tree/v2

Signed-off-by: Ryan Turner <turner@uber.com>
Signed-off-by: Faisal Memon <fymemon@yahoo.com>

.github/workflows/pr_build.yaml

@@ -305,7 +305,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -376,7 +376,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -414,7 +414,7 @@ jobs:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -453,7 +453,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true

.github/workflows/release_build.yaml

@@ -301,7 +301,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -370,7 +370,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -407,7 +407,7 @@ jobs:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true
@@ -445,7 +445,7 @@ jobs:
           path: .build
           key: ${{ runner.os }}-tools-${{ hashFiles('.go-version','Makefile') }}
       - name: Install msys2
-        uses: msys2/setup-msys2@d40200dc2db4c351366b048a9565ad82919e1c24 # v2
+        uses: msys2/setup-msys2@07aeda7763550b267746a772dcea5e5ac3340b36 # v2
         with:
           msystem: MINGW64
           update: true