config icu4c for macos actions

Author: jiaoshuntian

.github/workflows/build.yml

@@ -37,7 +37,8 @@ jobs:
     - name: configure - macos
       if: ${{ matrix.os == 'macos-latest' }}
       run: |
-        export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
+        brew install icu4c
+        export PKG_CONFIG_PATH=$(brew --prefix)/opt/icu4c/lib/pkgconfig
         ./configure \
             --enable-cassert --enable-debug --enable-rpath --with-tcl \
             --with-python --with-pam --with-ldap --with-libedit-preferred \

.github/workflows/oracle_pg_regression.yml

@@ -41,7 +41,8 @@ jobs:
     - name: configure - macos
       if: ${{ matrix.os == 'macos-latest' }}
       run: |
-        export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
+        brew install icu4c
+        export PKG_CONFIG_PATH=$(brew --prefix)/opt/icu4c/lib/pkgconfig
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
         ./cpanm --sudo IPC::Run && \
         ./configure \

.github/workflows/oracle_regression.yml

@@ -41,7 +41,8 @@ jobs:
     - name: configure - macos
       if: ${{ matrix.os == 'macos-latest' }}
       run: |
-        export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
+        brew install icu4c
+        export PKG_CONFIG_PATH=$(brew --prefix)/opt/icu4c/lib/pkgconfig
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
         ./cpanm --sudo IPC::Run && \
         ./configure \

.github/workflows/pg_regression.yml

@@ -41,7 +41,8 @@ jobs:
     - name: configure - macos
       if: ${{ matrix.os == 'macos-latest' }}
       run: |
-        export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
+        brew install icu4c
+        export PKG_CONFIG_PATH=$(brew --prefix)/opt/icu4c/lib/pkgconfig
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
         ./cpanm --sudo IPC::Run && \
         ./configure \